<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_first_fragment"
            android:title="@string/nav_first" />
        <item
            android:id="@+id/nav_second_fragment"
            android:title="@string/nav_second" />
        <item
            android:id="@+id/nav_third_fragment"
            android:title="@string/nav_third" />
    </group>
</menu>